Blade holder



July 31, 192s. 1,679,329

H. J. GAISMAN BLADE HOLDER origial Filed June 24. 1924 g l5@ 15a 6 5 7 5 7 Vf6 4 'l lf 3a w um D En lNyENTOR ATTORNEY Patented July 31, 1928.

UNITED STATES PATENT OFFICE.

HENRY J. GAISMAN, OF NEW YORK, N. Y., ASSIGNOR TO AUTOSTROP PATENTS COR- PORATION, OF DOVER, DELAWARE, A CORPORATION OF DELAWARE.

BLADE HOLDER.

Original application led June 24, 1924, Serial No. 721,972. Divided and this application le December 17, v1926.

My invention relates to improvements in blade holders and is particularly applicable for detachably retaining blades in safety razors and blade stropping mechanism.

The object of my invention is to provide a blade holder in which a razor blade may be readily applied and may be rocked for stropping its edge.

My invention comprises two plates or members adapted to receive a blade therebetween, one of which plates is secured to a shaft and the other plate is rotatable with respect to the shaft, said shaft being provided with a gear, and another shaft having a gear in mesh with the first named gear, whereby when the blade holder is reciprocated along a strop with the second named shaft in engagement therewith the blade holder will be rotated or rocked for stropping the edge of the blade. U

My invention also comprises novel detalls of improvement that will be more fully hereinafter setforth and then pointed out in the claim.

Reference is to be had to the accompanying drawings forming a part hereof, where;

Fi 1 is a. side view of a safety razor embodymg my invention;

Fig. 2 is a face view illustrating parts in position for use; l

Fig. 3 is a face view illustrating the members of the holder spread apart and a blade upon one of said members;

Fig. 4 is a cross section on the plane of line 4, 4, in Fig. 2;

Fig. 5 is an edge view, partly in section, on line' 5, 5, in Fig. 2;

Fig. 6 is a section on line 6, 6, in Fig. 3, and

Fig. 7 is a section on line 7 7, in Fig. 2.

Similar numerals of reference indicate corresponding parts in the several views.

The blade holder comprises plates or members 1, 2 hinged or pivoted together in such a manner as to embrace the blade 3 and bear against opposite sides thereof. One of said plates or members, as 1, is secured to a shaft 4, and is shown provided with spaced webs` or ears 5 coiled around the shaft and may be secured theretoin any suitable way, as by denting the webs into the shaft at 6, or by riveting the parts together.. The plate or member 2 is pivotallymounted upon sha-ft Serial No. 155,400.

4 as by means of webs or ears 7 coiled around 55 ing the plates or members together upon the blade, arranged as follows An arm or latch 8 is pivotally supported upon plate 1, as by means of rivet 9, so as to swing edgewise respecting said plate, the plate being shown offset at 1l to accommodate the arm or latch 65 y 8 so that the blade 3, when resting upon the plate 1, may have a portion overlying the arm or latch so as not to interfere with the latter, as shown in Fig. 6. The arm or latch 8 is provided with jaws or a recessed portion 70 at 8a, near its free end, adapted tol receive the edges of plates or members 1, 2 therebetween to retain said plates clamped upon the blade, as indicated ,in Figs. 4 and 7.

Jaws 8* are offset from the plane of the arm 75 or latch 8 at the pivot 9 so as to receive the corresponding edges of the two plates 1, 2 and the blade 3 therebetween, as indicated in Figs. 5 and 7. An arm or latch 8 is shown at opposite ends of plates 1, 2, near the inner portions of the latter, to correspondingly clamp 'and retain the end portions of said plates.

The blade 3 is shown provided with notches or recesses 3a at its ends near the 85 corners adjacent to the heel of the blade opposite its cutting edge, providing projections 3" at the inner corners of the blade which are adapted to be opposed by lugs or projections 10 located upon the inner portions of 90 the arms or latches 8 to oppose the blade projections 3b. The arms or latches 8 are shown provided with stops 11 adapted to engage the adjacent edge of plate 1 to limit the rotation of said arms relatively to said plate, whereby when the arms have been swung from the-position shown in Fig. 2 to the position shown in Fig. 3 the projections l0 will be located in position to receive a corresponding recess 38L of the blade with the 100 adjacent projection 3b thereof opposed to the` corresponding projection 10.

When a blade is to be inserted in the holder the arms or latches 8 are moved to the position shown in Fig. 3, to release the plates or members 1, 2; the plate 2 is swung away from plate 1, and a blade may be laid upon the latter plate in the position shown in Fig.

3, 'so that the projections 10 will enter the recesses 3 and the projections 3" of the blade will be behind the projections 10. When the blade is to be retained the plate 2 is swung upon the blade and the arms or latches 8' are moved inwardly so that t-he jaws 8a will embrace or grip the plates-1,2 therebetween, whereupon the projections 10 are moved out of the recesses 3 and away from cooperation with the projections 3b of the blade, as indicated in' Fig. 2.' In such position of the parts theblade would be loose between the lates 1, 2, which is the operative position of the latter, and in order toretain the blade between said plates when clamped against the blade I provide the blade with apertures,

, indicatedat 12, to receive corresponding projections 13 extending inwardly. from plate 1.

' The projections 13` may be formed' byem- .to one another as to bossing o1' pressing the metalof plate 1, as indicated in F ig. 4. The apertures 12 of the blade are shown related in such a manner roduce a designation, such as a word or sym ol. The arrangement of the apertures 12 is such with respect to projections 13 of plate 1 that when the blade 1s laid upon said plate certain of the :iperwhether such stropping means be lncorporated in a safety razor or only in a stroppng machine. In the example illustrated in ig. 1 I have shown my improved holder in a safety razor provided with means for stropping the blade, such as the well known Auto Strop safety razor. The razor frame 15 is provided with spaced uprights 15 in which the shaft 4 is journaled to rock, a gear 16 on said shaft being in mesh with a gear 17 secured to a shaft or roller 18 journaled between the uprights 15, in a well known way. A strop is adapted to pass between the shaft or roller 18 and base 19 of the frame so that when the frame is reciprocated along the strop vthe blade holder will be rocked back and forth by reason of the engagement of the strop with the shaft or roller 18. Frame 15 is shown provided with a guard 2O that is pivotally supported at 21, (on opposite sides), to base 19, a projection 22 on the guard beingY in position to be manually operated to cause the stops 23 on the guard to engage the blade edge to retain the latter in shaving position and to release the blade for stropping purposes and for replacement of a blade in the blade holder.

Although I have shown two rojections 13 on plate 1 to engage correspon ing apertures 12 in the blade it will be understood that one or more of such projections may be provided on said plate suitably located to engage the corresponding aperture or apertures m the blade.

This application is a division of my a lication filed June 24, 1924, Serial o. 21,972.

Having now described my invention what I claim is:

A safety razor including two shafts geared together, and two blade-holding plates mounted on one of said shafts, one of said plates being rotatable with respect to said sha t.

HENRY J. GAISMAN. 

